Investigators are due to examine part of a wing suspected to belong to missing flight MH370.
The Malaysia Airlines jet disappeared en route from Kuala Lumpur to Beijing in March 2014 with 239 people on board.
A wing fragment - confirmed to be part of a Boeing 777 - was discovered on the French Indian Ocean island of Reunion last week.
The part has been taken to the French city of Toulouse where experts will reportedly start analysing it on Wednesday afternoon.
Investigators from France and Malaysia are meeting in Paris after the arrival of a wing fragment many hope will unravel the mystery of missing Malaysia Airlines Flight MH370.
Experts are trying to fathom whether the part broke off the plane, which disappeared on March 8, 2014 while flying from Kuala Lumpur to Beijing with 239 people on board.
The broken wing was found on the French Indian Ocean island of Reunion and returned to the French mainland. The component was a 'flaperon' from the trailing edge of a Boeing 777 wing, a Boeing official said.
New debris initially believed to be from the missing MH370 plane which was found on the French island of Reunion belongs to a "domestic ladder" and is not an aircraft part, according to a Malaysian official.
Malaysia's Transport Minister has said flaperon debris found on Reunion Island has been identified as part of a Boeing 777, which is the same plane as missing flight MH370.
A second piece of suspected plane debris from missing flight MH370 has reportedly been washed up on the Indian Ocean island of Reunion.
According to the BBC, the wreckage believed to be a door was discovered south of the city of St Denis.
It comes after another piece of debris thought to be a wing part was found on the same island on Wednesday.
It has been taken to military unit near Toulouse in France which specialises in analysing aviation wreckage.
Airline debris thought to be from MH370 has arrived in France for investigation, Reuters reports.
The debris, which reportedly arrived at Orly airport, near Paris, at 4.17am, is set to be delivered to a military unit near Toulouse which specialises in analysing aviation wreckage.
Boeing is to send a technical team to help analyse debris found on Reunion Island in the Indian Ocean that is thought to be part of MH370.
The company made the announcement following a request from the civil aviation investigating authorities.
A Malaysian official earlier said the debris belonged to a Boeing 777.
Plane debris washed up on Reunion Island does belong to a Boeing 777, a Malaysian told AFP.
It is still too early to say if it is part of flight MH370 but no other Boeing 777 is thought to have crashed in the southern hemisphere since they came into service.
Two plastic bottles with Indonesian and Chinese writing on have washed up near where plane debris thought to be MH370 was found, local media reported.
There were 153 Chinese passengers on the plane which was carrying 239 people. Of these 38 were Malaysian.
French newspaper Linfo said it was impossible to say if the bottles were from MH370 as they could be waste from Asian cargo ships which regularly sail close by.
The piece of debris, believed to be part of a plane wing, has been sent to France for verification.
Relatives of those who on board flight MH370 plan to file a lawsuit against Malaysia Airlines if a piece of debris is confirmed to be the missing aircraft.
Zhang Qihuai, a lawyer representing several families, said a group of around 30 relatives had agreed they would take action if it was proved.
Some families are already pursuing settlements through insurer Allianz.